Sheet-like composite, especially packaging laminate for dimensionally stable foodstuff containers, having a polymeric intermediate layer characterized by differential scanning calorimetry

The sheet-like composite with a polymeric intermediate layer addressing sealing and adhesion issues in food packaging, enhances durability and efficiency by allowing a wider temperature range and improved adhesion, overcoming limitations of traditional containers.

US12459713B2Active Publication Date: 2025-11-04SIG SERVICES AG
View PDF 37 Cites 0 Cited by

Patent Information

Application Number
US16/067017
Authority / Receiving Office
US · United States
Patent Type
Patents(United States)
Current Assignee / Owner
Priority Date
2016-06-07
Filing Date
2016-12-21
Publication Date
2025-11-04
Estimated Expiration
2036-12-21

AI Technical Summary

Technical Problem

Existing packaging systems for foodstuffs, such as cans and jars, face challenges including limited space efficiency, high weight, energy consumption, and inadequate sealing properties, which can lead to damage during heating and insufficient adhesion between layers.

Method used

A sheet-like composite with a specific polymeric intermediate layer characterized by differential scanning calorimetry peaks A and B, where TB is at least 3°C wider than TA, and a carrier and barrier layer, providing improved sealing properties and adhesion, allowing for a wider temperature range during sealing and reduced sensitivity to heat.

Benefits of technology

The composite offers enhanced sealing capabilities with a broader operating window, improved adhesion between layers, and reduced sensitivity to heat, resulting in more durable and efficient food packaging.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure US12459713-D00000_ABST
    Figure US12459713-D00000_ABST
Patent Text Reader

Abstract

The invention relates to a sheet-like composite including as layers of a layer sequence, in a direction from an external side of the sheet-like composite to an internal side of the sheet-like composite, a) a carrier layer, b) a polymeric intermediate layer, and c) a barrier layer, where a graph of differential scanning calorimetry of the polymeric intermediate layer includes a peak A at a temperature TA and a peak B at a temperature TB, where the temperature TB is more than the temperature TA, where a width of the peak B is less by at least 3° C. than a width of the peak A. The invention further relates to a container precursor and to a closed container including the sheet-like composite, and also to a process by which the sheet-like composite is obtainable, and to a use of the sheet-like composite.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Robust planar composite with an intermediate layer of increased vicat softening temperature

    CN103747956A

  • Packaging laminate, method for producing same, and packaging container produced from the packaging laminate

    CN105073421A

  • Multilayer structure for packaging and packaging containers manufactured therefrom, as well as method for manufacturing of the multilayer structure

    EP1144186B1

  • Packaging laminates based on cardboard and paper

    EP1941995A2

  • Packaging laminate, method for producing same, and packaging container produced from the packaging container

    EP2767397A1